Evaluate the answer correct to the cent:
$\frac{\$1000}{(1+0.05{)}^2}$

The primary interest of designing a randomized block experiment is to:

A) reduce the within-treatments variation to more easily detect differences among the treatment means.
B) increase the between-treatments variation to more easily detect differences among the treatment means.
C) reduce the variation among blocks.
D) None of these choices.